CollectionUtil

java.lang.Object
- nl.siegmann.epublib.util.CollectionUtil

public class CollectionUtil
extends java.lang.Object

Nested Class Summary

Nested Classes
Modifier and Type Class Description

private static class CollectionUtil.IteratorEnumerationAdapter<T>
Wraps an Enumeration around an Iterator

Constructor Summary

Constructors
Constructor Description

CollectionUtil()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static <T> java.util.Enumeration<T>`	`createEnumerationFromIterator(java.util.Iterator<T> it)`	Creates an Enumeration out of the given Iterator.
`static <T> T`	`first(java.util.List<T> list)`	Returns the first element of the list, null if the list is null or empty.
`static boolean`	`isEmpty(java.util.Collection<?> collection)`	Whether the given collection is null or has no elements.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - CollectionUtil
```
public CollectionUtil()
```
- Method Detail
  - createEnumerationFromIterator
```
public static <T> java.util.Enumeration<T> createEnumerationFromIterator(java.util.Iterator<T> it)
```
    Creates an Enumeration out of the given Iterator.
    
    Type Parameters:
    
    T -
    
    Parameters:
    
    it -
    
    Returns:
    
    an Enumeration created out of the given Iterator.
  - first
```
public static <T> T first(java.util.List<T> list)
```
    Returns the first element of the list, null if the list is null or empty.
    
    Type Parameters:
    
    T -
    
    Parameters:
    
    list -
    
    Returns:
    
    the first element of the list, null if the list is null or empty.
  - isEmpty
```
public static boolean isEmpty(java.util.Collection<?> collection)
```
    Whether the given collection is null or has no elements.
    
    Parameters:
    
    collection -
    
    Returns:
    
    Whether the given collection is null or has no elements.